stillman



miran sfrxrns PATENT onirica.

H. W. STILLMAN, OF PORT WASHINGTON. 'ISCONSIN.

BRICK-MACHINE.

Specification of Letters Patent No. 24,962, dated August 2, 1859.

To all whom 'it may concern.'

Be it known that I, H. W. STILLMAN, of Port lVashington, in the countyof Ozaukee and State of Visconsin, have invented a new and ImprovedMachine for Molding and Pressing Bricks; and I do hereby declare thatthe following is a full, clear, and exact description of the same,reference being had to the annexed drawings, making a part of thisspecification, in which Figure l, is a side sectional view of myinvention. Fig. 2, is a plan or top view of ditto. Fig. 3, is a sideview of a portion of ditto. Fig. Il, is a vertical section of a por tionof ditto, taken in the line x, Fig. l.

Similar letters of reference indicate corre sponding parts in theseveral figures.

This invention consists in the employment or use of a series of rotatingmolds provided with movable bottoms operated by eccentrics, inconnection with a feeder and resisting plate the whole being arrangedfor joint operation as hereinafter shown, whereby a very compact andefficient machine is obtained.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents a framing the lower part of which is of rectangular formthe upper parts of the sides being of semi-circular form as shown at a.In the framing A, and concentric with the semi-circular tops a, of theframing a shaft B, is placed. This shaft is provided at each end withradial arms Z), four arms are shown at each end of the shaft in thedrawings, but any suitable number may be used. Each arm b, is slot-tedlongitudinally a certain distance as shown at c, in Fig. l, and in theseslots the ends of bars C, are fitted and allowed to slide freely towardand from the shaft B. To the ends of the arms Z), molds D, are attached,said molds being of the usual rectangular form, and to the bars C,plungers d, are attached, said plungers forming the bottoms of the moldsand allowed to slide freely therein. The plunger or bottoms d, are equalin thickness to the depth of the molds.

To each end of each bar C, a roller e, is attached. These rollers reston the peripheries of cams or eccentrics E, attached to each side of theframing. The form of these eccentrics is shown clearly in Fig. 3.

On each end of the shaft B, a wiper F, is placed, shown by dotted linesin Fig. l, and

the wipers act against arms f, f, which are attached to the framing A,at each side and have a bar or feeder Gr, attached to them by rods g, g,as shown plainly in F ig. 1.' The bar or feeder Gr, is of rectangularform and works in an inclined box H, attached to the framing A.

I, is a plate which has a bar 7L, attached to each end of it. These bars7L, are fitted on the shaft B, by means of oblong slots a', see Fig. 3,and the inner ends of the bars have each a ledge j, on their innersides, said ledges being eccentric with the shaft B, and acted upon aswill be presently described by pins 70, attached to the framing A. Theplate I, extends entirely across the framing A, and rests againstthe-edges of the semicircular tops a, a, of the sides of the framing. Tothe inner side of the plate I, two catches Z, Z, are attached, one neareach end. Each catch has a spring m, bearing against its lower end, seeFig. 4.

To the semi-circular tops a, a, of the sides of the framing projectionsa, are attached, one to each, and to the front side of the framing A,brackets 0, o, are attached to hold the plate I, when the same isdepressed.

In the lower part of the framing A, an endless apron J, is placed, saidapron being driven by belts p, from pulleys g, at the ends of the shaftB.

The operation is as follows The shaft B, is rotated in the directionindicated by the arrow 1, and the tempered clay falls in the box H,above the feeder G, which has a reciprocating movement communicated toit in consequence of the wipers F, F, acting against the arms f, f, thearms f, as they are acted upon by the wipers raising the feeder G, inthe box and the arms f', throwing it back. Each time the feeder Gascends in the box H, it forces clay into a mold D, which passes at theproper time in line with the box H, to receive the clay and as thefilled mold passes upward behind the plate I, the catches Z, are by thesprings m, forced over the ends of the arms b, and the plate is carriedupward with the lled mold. The plungers or bottoms (l, of the molds are,at this point, forced into the molds in consequence of the rollerspassing around on the peripheries of the eccentrics E, and the plate I,is also slightly pressed inward and made to bear firmly on the face ofthe mold in consequence of the ledges 7c, at the inner ends of the barsL, passing over the pins 7c. The

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clay therefore is compressed in the molds by means of the plungers orbottoms d, in connection with the resisting plate I. IVhen the moldreaches the projections n, a. the

plate I, is released from it in consequence of said projections n,actuating the spring Z, and the plate I, falls back into the brackets 0,by its own gravity to be again raised by the succeeding mold, and theprevious mold as it passes around has the compressed clay or bricksforced from it by the plungers or bottoms d, the bricks falling on theapron J, which as it moves in the direction of arrow 2,

conveys the bricks from the machine.

I do not claim broadly molds provided with plungers or movable bottomsfor they H. W. STILLMAN.

IVitnesses:

L. TowsLEY, GEO. C. WILLIAMS.

